import Vue from 'vue'
import VueRouter from 'vue-router'
// import Login from './components/Login.vue'
// import Home from './components/Home.vue'
// import Welcome from './components/Welcome.vue'

// import Users from './components/user/Users.vue'
// import Rights from './components/power/Rights.vue'
// import Roles from './components/power/Roles.vue'

// import Cate from './components/goods/Cate.vue'
// import Params from './components/goods/Params.vue'

// import GoodsList from './components/goods/List.vue'
// import Add from './components/goods/Add.vue'

// import Order from './components/order/Order.vue'
// import Report from './components/report/Report.vue'

const Login = () => import(/* webpackChunkName: "Login_Home_Welcome" */ './components/Login.vue')
const Home = () => import(/* webpackChunkName: "Login_Home_Welcome" */ './components/Home.vue')
const Welcome = () => import(/* webpackChunkName: "Login_Home_Welcome" */ './components/Welcome.vue')

const Users = () => import(/* webpackChunkName: "Users_Rights_Roles" */ './components/user/Users.vue')
const Rights = () => import(/* webpackChunkName: "Users_Rights_Roles" */ './components/power/Rights.vue')
const Roles = () => import(/* webpackChunkName: "Users_Rights_Roles" */ './components/power/Roles.vue')

const Cate = () => import(/* webpackChunkName: "Cate_Params" */ './components/goods/Cate.vue')
const Params = () => import(/* webpackChunkName: "Cate_Params" */ './components/goods/Params.vue')

const GoodsList = () => import(/* webpackChunkName: "GoodsList_Add" */ './components/goods/List.vue')
const Add = () => import(/* webpackChunkName: "GoodsList_Add" */ './components/goods/Add.vue')

const Order = () => import(/* webpackChunkName: "Order_Report" */ './components/order/Order.vue')
const Report = () => import(/* webpackChunkName: "Order_Report" */ './components/report/Report.vue')

Vue.use(VueRouter)

const routes = [{
  path: '/',
  redirect: '/login'
}, {
  path: '/login',
  component: Login
}, {
  path: '/Home',
  component: Home,
  redirect: '/welcome',
  children: [{
    // 这 Home 组件里展示 Welcome 子组件
    path: '/welcome',
    component: Welcome
  }, {
    path: '/users',
    component: Users
  }, {
    path: '/rights',
    component: Rights
  }, {
    path: '/roles',
    component: Roles
  }, {
    path: '/categories',
    component: Cate
  }, {
    path: '/params',
    component: Params
  }, {
    path: '/goods',
    component: GoodsList
  }, {
    // 注意这种写法和直接把 /add 当做 /goods 的子路由是不一样的
    path: '/goods/add',
    component: Add
  }, {
    path: '/orders',
    component: Order
  }, {
    path: '/reports',
    component: Report
  }]
}]

const router = new VueRouter({
  routes
})

router.beforeEach((to, from, next) => {
  // to 要访问的路径
  // from 从哪里来的
  // next() 直接放行，next('/login') 表示跳转
  // 要访问 /login 的话那直接放行
  if (to.path === '/login') return next()
  const tokenStr = window.sessionStorage.getItem('token')
  // token 不存在那就跳转到登录页面
  if (!tokenStr) return next('/login')
  // 否则 token 存在那就放行
  next()
})

export default router
